assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:4555 IAO:0000115 An ovarian carcinoma that is characterized by large pleiomorphic cells with large round or oval nuclei, presence of mitoses and staining for neuroendocrine (NE) markers and has_material_basis_in neuroendocrine cells. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007645""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4014794/""}]}"